Tunnel heading-along earthquake advanced detection device taking heading machine as earthquake focus and method thereof

Abstract

The invention discloses a tunnel heading-along earthquake advanced detection device taking a heading machine as an earthquake focus and a method thereof. The device comprises an earthquake detector, an earthquake focus signal receiving sensor and an earthquake wave receiving detector array, wherein the earthquake focus signal receiving sensor is arranged on the arm of the heading machine; and the earthquake wave receiving detector array is arranged on a tunnel wall. The method comprises the following steps of: continuously acquiring earthquake wave signals through a three-component sensor which is coupled on the arm of the heading machine and a three-component sensor array which is arranged on tunnel surrounding rock by taking vibration generated by cutting rock with a cutting head during working of the heading machine as a hypocenter; and recording the acquired signals for processing, and forecasting the position and structural detail of a geological anomalous body in front of a tunnel by analyzing received wave field imaging geometrical characteristics. Due to the adoption of the device and the method, the problem of oneness of an earthquake wave field of a pure explosive source in near flat ground layer tunnel advanced detection can be solved without influencing the tunnel heading work; the device has high working efficiency and high detection accuracy, and is free from safety risks; and accurate positioning of a geometrical anomalous body can be realized.

Description

technical field [0001] The invention relates to a method for advanced detection of various hazardous geological bodies in front of a roadway (tunnel) in mining engineering, geotechnical engineering, underground engineering, and tunnel engineering, and in particular to a roadway excavation-driven earthquake with a roadheader as a seismic source Advance detection device and method. Background technique [0002] In the prior art, methods for advanced seismic wave detection of roadways mainly include TSP (Tunnel Seismic Prediction) and its variant methods, land sonar method, TRT method (True Reflection Tomography, TRT true reflection tomography) and so on. [0003] TSP is a commonly used seismic wave advanced detection method in tunnel advanced prediction, but due to the limitation of observation conditions and the reflection in different directions in the rock body, it encounters great difficulties in interpretation and discrimination. The cost of using this method to implemen...

AI Technical Summary

Problems solved by technology

[0007] The roadway excavation operation must be stopped during the advanced detection work of the seismic wave method, which affects production; the detection effect of near-horizontal strata is not ideal; the requirements for the seismic source are high; the construction of the blast hole is complicated by using the explosive seismic source, and there is a certain safety risk, and the seismic wave excited by the explosive seismic source Only a single direction is dominant, the amount of information is small, the wave field imaging is greatly affected by noise, and the effect is poor

Images